package com.liujiaqi.lease.web.admin.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.liujiaqi.lease.common.constant.RedisConstant;
import com.liujiaqi.lease.common.exception.LeaseException;
import com.liujiaqi.lease.common.result.ResultCodeEnum;
import com.liujiaqi.lease.common.utils.JwtUtil;
import com.liujiaqi.lease.model.entity.SystemUser;
import com.liujiaqi.lease.model.enums.BaseStatus;
import com.liujiaqi.lease.web.admin.mapper.SystemUserMapper;
import com.liujiaqi.lease.web.admin.service.LoginService;
import com.liujiaqi.lease.web.admin.vo.login.CaptchaVo;
import com.liujiaqi.lease.web.admin.vo.login.LoginVo;
import com.liujiaqi.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.wf.captcha.SpecCaptcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

  @Autowired
  private StringRedisTemplate stringRedisTemplate;

  @Autowired
  private SystemUserMapper systemUserMapper;

  @Override
  public CaptchaVo getCaptcha() {

    SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 5);

    String code = specCaptcha.text().toLowerCase();
    String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();

    stringRedisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

    return new CaptchaVo(specCaptcha.toBase64(), key);
  }

  @Override
  public String login(LoginVo loginVo) {
    // 判断验证码是否为空
    if (loginVo.getCaptchaCode() == null) {
      throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
    }

    // 通过key获取redis中的验证码
    String code = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
    if (code == null) {
      throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
    }

    // 校验用户输入的验证码
    if (!code.equals(loginVo.getCaptchaCode().toLowerCase())) {
      throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
    }

    // 校验用户是否存在
    LambdaQueryWrapper<SystemUser> queryWrapper = new LambdaQueryWrapper<>();
    queryWrapper.eq(SystemUser::getUsername, loginVo.getUsername());
    SystemUser systemUser = systemUserMapper.selectOneByUserName(loginVo.getUsername());
    if (systemUser == null) {
      throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
    }

    // 判断用户账号是否被禁用
    if (systemUser.getStatus() == BaseStatus.DISABLE) {
      throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
    }

    // 判断密码是否正确
    if (!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))) {
      throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
    }

    return JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());
  }

  @Override
  public SystemUserInfoVo getLoginUserInfoById(Long userId) {
    SystemUser systemUser = systemUserMapper.selectById(userId);
    SystemUserInfoVo systemUserInfoVo = new SystemUserInfoVo();
    systemUserInfoVo.setAvatarUrl(systemUser.getAvatarUrl());
    systemUserInfoVo.setName(systemUser.getName());
    return systemUserInfoVo;
  }
}
